/*
 * Copyright (c) 2016, The Bifrost Authors. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * * Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * * Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * * Neither the name of The Bifrost Authors nor the names of its
 *   contributors may be used to endorse or promote products derived
 *   from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#pragma once

#include <fstream>
#include <memory>

// TODO: gcc < 5 has a bug where std streams are not movable
class movable_ofstream_WAR {
	std::unique_ptr<std::ofstream> _stream;
public:
	inline explicit movable_ofstream_WAR(std::string f)
		: _stream(new std::ofstream(f)) {}
	template<typename T>
	inline movable_ofstream_WAR& operator<<(T const& val) {
		*_stream << val;
		return *this;
	}
	inline movable_ofstream_WAR& write(const char* s, std::streamsize n) {
		_stream->write(s, n);
		return *this;
	}
};

class BFproclog_impl {
	friend class ProcLogStream;
	std::string _filename;
public:
	BFproclog_impl(BFproclog_impl const& ) = delete;
	BFproclog_impl& operator=(BFproclog_impl const& ) = delete;
	BFproclog_impl(std::string name);
	~BFproclog_impl();
	void update_s(const char* str);
	void update_v(const char* fmt, va_list args);
	void update(const char* fmt, ...);
	// TODO: gcc < 5 has a bug where std streams are not movable
	//std::ofstream update();
	movable_ofstream_WAR update();
};
typedef BFproclog_impl ProcLog;
